Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/hoangsonww/Claude-Code-Agent-MonitorWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/hooks/hoangsonww/claude-code-agent-monitor/stop)<a href="https://agentmods.dev/hooks/hoangsonww/claude-code-agent-monitor/stop"><img src="https://agentmods.dev/badge/hooks/hoangsonww/claude-code-agent-monitor/stop/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/hooks/hoangsonww/claude-code-agent-monitor/stop"><img src="https://agentmods.dev/badge/hooks/hoangsonww/claude-code-agent-monitor/stop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade B, and why
Stop scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
"command": "jq -r '{session_id: .session_id, stop_reason: .stop_reason, timestamp: now | todate}' | curl -s -X POST http://localhost:4820/api/hooks/event -H 'Content-Type: application/json' -d @- > /dev/null 2>&1 || true Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
"command": "jq -r '{session_id: .session_id, stop_reason: .stop_reason, timestamp: now | todate}' | curl -s -X POST http://localhost:4820/api/hooks/event -H 'Content-Type: application/json' -d @- > /dev/null 2>&1 || true What it actually says
{
"Stop": [
{
"matcher": "",
"hooks": [
{
"type": "command",
"command": "jq -r '{session_id: .session_id, stop_reason: .stop_reason, timestamp: now | todate}' | curl -s -X POST http://localhost:4820/api/hooks/event -H 'Content-Type: application/json' -d @- > /dev/null 2>&1 || true"
}
]
}
]
}What else hooks.json configures
This page is one entry in a file that holds 2. Installing the file brings all of them; each is measured and scanned on its own page.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 13 lines scan B b8619bc7f93a
Stop is a hook published in the GitHub repository hoangsonww/Claude-Code-Agent-Monitor (987 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other hooks, from other repositories
SubagentStop
Runs when a subagent finishes, executing bin.mjs via bun. From fusengine/agents.
PostToolUse
Runs after a tool call finishes for TaskCreate, TaskUpdate, Write and Edit tool calls, executing bin.mjs via bun. From fusengine/agents.
PreToolUse
Runs before the agent uses a tool for Task tool calls, executing bin.mjs via bun. From fusengine/agents.
SessionEnd
Runs when a session ends, executing bin.mjs via bun. From fusengine/agents.
PostToolUse
Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.
SessionStart
Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.